no module named 'pyopenpose'
When I am trying to run the python demo, it keep saying 'no module named 'pyopenpose'':

However, my python library is already produced from the previous VS build. It is readily available at:

Why my python can't access this library?
I followed the instruction on https://github.com/CMU-Perceptual-Computing-Lab/openpose/issues/1427#issuecomment-586585581 , downgrade to python 3.7 and it works.
This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.
PS J:\openpose-master\examples\tutorial_api_python> & C:/Users/tsai/AppData/Local/Programs/Python/Python37/python.exe j:/openpose-master/examples/tutorial_api_python/01_body_from_image.py
Error: OpenPose library could not be found. Did you enable BUILD_PYTHON in CMake and have this Python script in the right folder?
No module named 'pyopenpose'
result